Hey Guys,
A while back I started a thread here about initially designing my feed system
for a Hybrid Nitrous Oxide- HTPB engine. I think I’ve finally come to final
possible design and I wanted to post it here to get some opinions from others
on the design.
Overall I had a few questions I wanted to voice about the current design of the
feed system I have. Firstly My question is as to how do I prevent a backflow of
combustion flames through the injector line once it is shut off after ignition.
My first Idea was to implement another Flame back Arrestor and/or have flame
back arrestors on each line(main and ignitor)- however I think there might be
another solution which I am trying to figure out.
For the purge/fill vent (which I intend to use so I can use a dip tube on my
fill tank instead of gravity filling), I was initially thinking to put it at
the 4 way fitting above the tank which would simplify the tank design
significantly however I was thinking this would just lead to the liquid flow to
just exit thought the 4 way fitting to atmosphere instead of actually entering
the tank. Im not so sure about the design decision so I would love to here
thoughts about it.
Regarding the actual Dip tube for my fill tank- I’m getting my tank bought from
a third party and I wanted to know is their somewhat of a universal method of
building a dip-tube (or generally how do you build a dip tube for third party
tanks) and how do I do it (no experience with dip tube design).
Another point Id like to mention is the positioning of the actual back up
regulator, would I require anymore regulators for use between the actual
automated ball valves for Nitrous Oxide?
As you clearly can see from this post, I am still new to this so any
help/advice at all would be very much appreciated given how confusing this feed
system stuff can get and I really do appreciate the amount of help you guys
have given me already.
Many Thanks again,
Elias
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